I keep saying that the Ms Marvel suit can look outlandish as that's literally what it is or an homage to one anyways. It's based on an aliens suit whichever one you deside to go with. The Hawkeye argument is irrelevent here as there is no point whatsoever for a SHIELD opperative to be wearing a colorful suit. In Ms.Marvel's case you can. All the colorful suits in the MCU to this point have their reasoning that make sense for each particular character.